What does perennial mean?

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From our dictionary:

per•en•ni•al

Pronunciation: (pu-ren'E-ul), [key]
adj.
1. lasting for an indefinitely long time; enduring: her perennial beauty.
2. (of plants) having a life cycle lasting more than two years.
3. lasting or continuing throughout the entire year, as a stream.
4. perpetual; everlasting; continuing; recurrent.

n.
1. a perennial plant: Daffodils and tulips are perennials.
2. something that is continuing or recurrent.